From mtang at snf.stanford.edu Tue May 1 20:15:26 2001
From: mtang at snf.stanford.edu (Mary Tang)
Date: Tue, 01 May 2001 20:15:26 -0700
Subject: Wet Bench Retraining
Message-ID: <3AEF7BCE.FEC17FF7@snf.stanford.edu>
Wet Bench Users (wbdiff, wbsilicide, wbnonmetal, wbgeneral):
I am sure most of you would agree that things have been getting a bit
out of control at the wet benches. Many people are not certain of the
proper procedures for handling chemicals, cassettes, and wafers. And a
few people don't seem to be exercising common courtesy.
There are going to be a number of changes to the wet benches, in terms
of operating procedures, policies, and equipment (see below). These
changes we hope will make the wet benches both safer and easier to use.
The first thing we would like to do is to make sure everyone is starting
from the same, basic understanding of how to use these benches. New
operating procedures have been written for these wet benches. Everyone
currently qualified on these wet benches will be required to read these
operating procedures and take written tests to indicate their
understanding of the procedures. This policy is effective immediately.
There will be a one month grace period in which currently qualified
users will be able to remain qualified. After May 31, anyone who has
not turned in and passed the written test will lose their qualification.
These tests will be available in Uli and Henry's office, CIS room 146,
located next to the CIS Xerox/FAX room, under the stairs.
A final word about the tests: there really is nothing to prevent you
from sharing answers -- but please don't. The purpose of these tests is
not to screen people from working at these benches, but to educate
everyone on their proper and safe use. Please abide by the Stanford
Honor Code (even if you are from Cal.) By submitting your tests you are
saying that you understand and will follow these procedures -- and
everyone will be expected to enforce them.
Some of the other changes that are coming up:
1. The Nanostrip hot pot will be converted back to a sulfuric/peroxide
hot pot. (We haven't given up on Nanostrip, but just put it aside until
we understand it better.) The announcement is imminent.
2. We are in the process of reprogramming to controllers so that hot
pots can be aspirated at a higher temperature. This also requires
checking the facilities to make sure we can handle this. Acid changes
will be much faster once this is done.
3. There is serious discussion about gloves, safety gear and general
ergonomics. If you have any suggestions or ideas, the SNF staff would
appreciate hearing them.
If you have any questions regarding this requirement, or any of the
specific wet bench procedures, don't hesitate to contact the SNF staff.
Mary
--
Mary X. Tang, Ph.D.
National Nanofabrication Users' Network
Stanford Nanofabrication Facility
CIS Room 136, Mail Code 4070
Stanford, CA 94305
(650)723-9980
mtang at snf.stanford.edu
From jhaydon at snf.stanford.edu Mon May 7 16:46:07 2001
From: jhaydon at snf.stanford.edu (jhaydon)
Date: Mon, 07 May 2001 16:46:07 -0700
Subject: Right hand hot pot
Message-ID: <3AF733BF.6742CDE5@snf.stanford.edu>
To all
The right hand hot pot is now operational. the temperature set point is
120 degrees C it should not go above 130 degrees C after solution has
stabilized. The hot pot can now be aspirated at 70 degrees C.
Jim H
From latta at snf.stanford.edu Tue May 8 11:35:43 2001
From: latta at snf.stanford.edu (Nancy Latta)
Date: Tue, 08 May 2001 11:35:43 -0700
Subject: Changes at Nonmetal Wetbench
Message-ID: <3AF83C7F.F4FDC6C@snf.stanford.edu>
Folks,
Due to popular demand, we have removed the Nanostrip from the right hand
hot pot and replaced it with sulfuric acid hydrogen peroxide (piranha).
The operating temp has been increased to 120C The right hand and left
hand hotpots are now identical.
Please note the the temp to drain either of the hot pots has been
increased to 70C in an effort to decrease the amount of time needed to
cool down to dump temp.
The acid supply cart, or pass-through, will no longer stock Nanostrip.
That space has been changed back to sulfuric acid. Nanostrip will be
kept in the stckroom and is available by special request. It may be
used at wbgeneral or wbgaas.
From sanli at piezo.Stanford.EDU Sun May 13 21:16:57 2001
From: sanli at piezo.Stanford.EDU (Sanli Ergun)
Date: Sun, 13 May 2001 21:16:57 -0700 (PDT)
Subject: 4 inch casettes
Message-ID:
There are only 2 casettes left at the bench. Please return them.
Sanli
From jhaydon at snf.stanford.edu Tue May 15 07:37:37 2001
From: jhaydon at snf.stanford.edu (jhaydon)
Date: Tue, 15 May 2001 07:37:37 -0700
Subject: Aspiration temp
Message-ID: <3B013F31.21CA943F@snf.stanford.edu>
To all:
The aspiration temperature setting for the hot pots on wb nonmetals has
been increased to 120 degrees C. this is also the set point temperature.
The other wet benches still have a lower setting but will be changed
when we are able to do so.
Jim H
From uli at snf.stanford.edu Wed May 16 17:21:42 2001
From: uli at snf.stanford.edu (Uli Thumser)
Date: Wed, 16 May 2001 17:21:42 -0700
Subject: Reminder
References: <3AEF7BCE.FEC17FF7@snf.stanford.edu>
Message-ID: <3B031996.13072FD7@snf.stanford.edu>
Mary Tang wrote:
> Wet Bench Users (wbdiff, wbsilicide, wbnonmetal, wbgeneral):
>
> I am sure most of you would agree that things have been getting a bit
> out of control at the wet benches. Many people are not certain of the
> proper procedures for handling chemicals, cassettes, and wafers. And a
> few people don't seem to be exercising common courtesy.
>
> There are going to be a number of changes to the wet benches, in terms
> of operating procedures, policies, and equipment (see below). These
> changes we hope will make the wet benches both safer and easier to use.
>
> The first thing we would like to do is to make sure everyone is starting
> from the same, basic understanding of how to use these benches. New
> operating procedures have been written for these wet benches. Everyone
> currently qualified on these wet benches will be required to read these
> operating procedures and take written tests to indicate their
> understanding of the procedures. This policy is effective immediately.
> There will be a one month grace period in which currently qualified
> users will be able to remain qualified. After May 31, anyone who has
> not turned in and passed the written test will lose their qualification.
>
> These tests will be available in Uli and Henry's office, CIS room 146,
> located next to the CIS Xerox/FAX room, under the stairs.
>
> A final word about the tests: there really is nothing to prevent you
> from sharing answers -- but please don't. The purpose of these tests is
> not to screen people from working at these benches, but to educate
> everyone on their proper and safe use. Please abide by the Stanford
> Honor Code (even if you are from Cal.) By submitting your tests you are
> saying that you understand and will follow these procedures -- and
> everyone will be expected to enforce them.
>
> Some of the other changes that are coming up:
> 1. The Nanostrip hot pot will be converted back to a sulfuric/peroxide
> hot pot. (We haven't given up on Nanostrip, but just put it aside until
> we understand it better.) The announcement is imminent.
> 2. We are in the process of reprogramming to controllers so that hot
> pots can be aspirated at a higher temperature. This also requires
> checking the facilities to make sure we can handle this. Acid changes
> will be much faster once this is done.
> 3. There is serious discussion about gloves, safety gear and general
> ergonomics. If you have any suggestions or ideas, the SNF staff would
> appreciate hearing them.
>
> If you have any questions regarding this requirement, or any of the
> specific wet bench procedures, don't hesitate to contact the SNF staff.
>
> Mary
>
> --
> Mary X. Tang, Ph.D.
> National Nanofabrication Users' Network
> Stanford Nanofabrication Facility
> CIS Room 136, Mail Code 4070
> Stanford, CA 94305
> (650)723-9980
> mtang at snf.stanford.edu
From mtang at snf.stanford.edu Wed May 30 15:28:08 2001
From: mtang at snf.stanford.edu (Mary Tang)
Date: Wed, 30 May 2001 15:28:08 -0700
Subject: Re-qualification Reminder
Message-ID: <3B1573F8.50C1CF0A@snf.stanford.edu>
Greetings wet bench users --
Just a reminder that tomorrow is June 1. No, your PC will not be hit by
the sulfnbx.exe virus. But you may lose your ability to enable wbdiff,
wbsilicide, or wbnonmetal, if you have not yet turned in the appropriate
written tests (available in Uli & Henry's office). For uninterrupted
access to these stations, please turn them in this week. After Monday,
current users not on Uli's list of favorite people will be subject to
losing their qualifications on these stations and will have to have jump
through hoops (or at least take these tests and get them reviewed)
before being requalified.
Mary
--
Mary X. Tang, Ph.D.
National Nanofabrication Users' Network
Stanford Nanofabrication Facility
CIS Room 136, Mail Code 4070
Stanford, CA 94305
(650)723-9980
mtang at snf.stanford.edu
From mtang at snf.stanford.edu Wed May 30 17:32:16 2001
From: mtang at snf.stanford.edu (Mary Tang)
Date: Wed, 30 May 2001 17:32:16 -0700
Subject: [Fwd: Re-qualification Reminder]
Message-ID: <3B159110.4B94F581@snf.stanford.edu>
Yes, me again --
As several people have pointed out, tomorrow is the 31st (darn, I was so
hoping it was already Thursday!) and there's actually another day's
reprieve. As also pointed out, I neglected to mention that
requalification also applies to wbgeneral.
To reiterate, there are a total of five tests for all these wet benches:
- wbgeneral, wbdiff, wbsilicide, and wbnonmetal each have a station
specific test.
- in addition, there is a single test for wbdiff, wbsilicide, and
wbnonmetal which covers those procedures and equipment which are the
same for these stations.
All tests are available in Uli & Henry's office and should be returned
there when completed.
Please [continue to!] direct questions, comments [and complaints] to me.
Thanks,
Mary
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From mtang at snf.stanford.edu Thu May 31 08:56:58 2001
From: mtang at snf.stanford.edu (Mary Tang)
Date: Thu, 31 May 2001 08:56:58 -0700
Subject: Wet Bench Requalification...
Message-ID: <3B1669CA.C6A6EF3B@snf.stanford.edu>
Hello all --
I've been inundated with emails regarding the wet bench tests! And yes,
indeed, the new policy is that the "Multi-Wet Bench" test DOES cover
wbsilicide, wbnonmetal, and wbdiff. Only wbgeneral has its own test.
(My apologies for the misinformation in the last email -- I was on
vacation when the policy change was made and was thus clueless. There
are still individual tests for each wet bench -- and I invite you all to
at least take a look at them [I see there's going to be a rush to Uli's
now - yeah, right]. Future users WILL have to take these individual
tests in addition to the Multi-Wet Bench test -- so lucky you!)
By the way, Uli says that very few people are filling out the section
correctly on what to write on the "blue cards" for the wbgeneral test.
This is probably because the operating procedures are not explicit (but,
rather, implicit) on this subject. The purpose of the blue cards is to
let everyone know what chemicals are being used. The policy is to use
chemical names, rather than jargon (like "BOE" or "Piranha") because
everyone should know what nasties they've just poured into a beaker, and
because some jargon just doesn't cut it ("Resist Stripper" -- yes,
haven't we all seen this?) No, people are not going to be failed on the
test because of this -- BUT, make sure your blue cards are correct at
wbgeneral (you are forewarned!)
Mary
--
Mary X. Tang, Ph.D.
National Nanofabrication Users' Network
Stanford Nanofabrication Facility
CIS Room 136, Mail Code 4070
Stanford, CA 94305
(650)723-9980
mtang at snf.stanford.edu